checkrad replace by other script

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can i replace checkrad with another script


$ cat ~/satish/url.txt

System administrator ( Data Center )

please visit this site

http://linux.tulipit.com

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can i replace checkrad with another script <br><BR><BR>$ cat ~/satish/url.txt<br><br>System administrator ( Data Center )<br><br>please visit this site<br><br>http://linux.tulipit.com&nbsp;&nbsp;&nbsp;<p>



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